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Category Archives :Radio knowledge

What is ARES The Amateur Radio Emergency Service

The Amateur Radio Emergency Service (ARES) consists of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service when disaster strikes.  ...

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Learn the Two Way Radio Production Process with Ailunce

Have you go to the factory to see the two way radio production? Here Ailunce will take you to learn the production process. We take an example of the Retevis RT47. RT47 is a lecense free IP67 radio.  ...

Read more  Production Process

Amateur Radio International Q-Code

We always say QSL card. We know it indicates that we communicate a ham on the air successfully. Every time after we have a communication with another ham, we hope to get a QSL card from him. The QSL numbers is just like an honor. Do you know why we use the QSL? Do you know the Q-code in amateur radio?  ...

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What's the Difference Between SMA and TNC Connector

The external wireless antenna looks like a similar look, but if you look closely, you will find that they have very different antenna interfaces. If the newly purchased external antenna does not match the radio interface, you will not be able to use it properly.  ...

Read more  SMA,  TNC

The History of M, N, SMA and BNC Antenna Connector

Referring to the representative symbols of amateur radios, it is estimated that a large number of hams will vote for the antenna (exactly, the Yagi antenna). The rest of hams may choose radio equipments. there will be few people notice the small thing of the antenna connector. If someone ask you, why is your device using the M head connector, how it is performing, and so on. Can you reply well? Today let's learn the antenna connector together.  ...

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CTCSS and DCS Used on Repeater

CTCSS (Continuous Audio Coded Squelch System) is the most commonly used. Digital Code Squelch is a further development of the continuous tone-coded squelch system. In order not to accidentally turn on the transmitter by the clutter signal, the repeater must set the receiving CTCSS tone. To connect the repeater, the intercom must be set to CTCSS tone.  ...

Read more  repeater ctcss,  ctcss and dcs,  radio ctcss and dcs

Basic Knowledge about Radio Repeater

Getting started with radio repeaters basic knowledges. What is a repeater? What is downlink and unplink? What is offset?  ...

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How to estimate the repeater communication distance

For radio system, the repeater( relay station) plays on important role in extending the communication range and coverage. The indispensable equipment for wireless communication system. For the communication range of repeater, we usually get it from two ways  ...

Read more  Repeater,  Distance

Common Types of Short-wave Antennas

The commonly used short-wave antennas are mainly classified into three categories, the vertical antenna (GP), the dipole antenna (DP), and the Yagi antenna (YAGI). In addition, there are frame type, diamond type, dish type, etc. Here we mainly discuss the first three types of antennas, among which the focus is on dipole antenna and its deformation.  ...

Read more  Antenna,  HF